Although male rabbits are frequently used for research on reproduction, certain questions must be answered to facilitate the design of meaningful experiments. Two of these questions are discussed in the present paper, namely: when is a male sexually mature in terms of sperm production or sperm output?, and what are norms for semen characteristics and daily sperm output (dso) ?
Twelve random-bred New Zealand White bucks, born between 26th June and 2nd July 1965, were purchased at 17 weeks of age. They were exposed to natural daylight and ambient temperature between 0 and 30° C. During postnatal Weeks 18 and 19, rabbits were trained to ejaculate with a Waltontype artificial vagina. Live teaser does were used. From